Wheels again today (and so on).
Built a rear wheel using a DT R470db rim.
This is a continuation from the other day.
The hub is a Novatech D792SB with reverse high-low flanges,
24-hole black Champion/Competé 26JIS laced with silver aluminum nipples.
I'll do the final truing later.
I wanted to increase the spoke weight ratio on the freewheel side a bit,
and I also considered Sapim Strong spokes,
but the list price for 100 silver Strong spokes is ¥7,500 before tax,
while black Strong is ¥13,500 before tax.
Since black CX-RAY is ¥50,000, it's cheaper by comparison,
but this time I ended up going with 14-gauge plain spokes.
Black Champion comes in 255–303mm lengths in 1mm increments
and is sold in 4 or 10-spoke units,
but plain spokes can be cut to any length, so they're also sold
in 315mm lengths
in quantities of 72, 100, or 500 spokes.
At our shop, we basically only stock 315mm spokes.
The per-spoke list prices (before tax) for 4/10/72/100/500 units are
¥110/¥89/¥98.6/¥93/¥68 respectively.
Wait, that's weird—the next cheapest unit price after 500 is 10 spokes?
Plus, 4 and 10-spoke sets come with brass nipples (though we almost never use those),
but 72-spoke sets and up are spokes only.
There's a takoyaki shop nearby that sells 6-piece, 10-piece, and 15-piece boxes,
and for some reason the 10-piece is the cheapest per unit.
It's like that here too.
(Though it's rare, if a customer bought 30 pieces, they'd get three 10-piece boxes
versus two 15-piece boxes, and the three 10-piece boxes would actually be cheaper—
I wonder how shop owners don't realize this).
By the way, with silver Champion there's no 72-spoke option,
only 4/10/100/500 spokes,
and their per-spoke list prices (before tax) are
¥68/¥68/¥60/¥40 respectively.
For small quantities the price per spoke stays the same,
and only the 500-spoke option suddenly drops in price.
As I've mentioned before,
on DT rims, the phase of the sticker relative to the valve hole
is offset by 90° between the left and right sides of the rim.
When building an offset rim rear wheel,
the phase directly below the valve hole will always have no sticker
(the upper state in the two images above).
So if the rear rim is the R411 Asymmetric offset rim with braking surface,
and the matching rim brake front wheel is built with the non-offset RR411,
I align the front rim so there's no sticker directly below the right-side valve hole
to match front and rear.
Also, since building an offset rim rear wheel always results in
no sticker directly below the right-side (freewheel side) valve hole,
I interpret this as DT's official standard,
so when building front and rear wheels with non-offset rims like the XR331,
I align both wheels so there's no sticker directly below the valve hole
when viewed from the right side.
In the case of RR411db (image above), disc brake wheels have
a rotor mounting surface on the front hub too,
so both front and rear rims can be offset rims with no problem,
which is why they only come as offset rims.
When building a front wheel with a disc hub, the orientation of the offset rim is
opposite to the rear wheel, so when building front and rear with RR411db,
the phase relationship between the valve hole and sticker when viewed from the right side is always reversed.
Both wheels in the image above are oriented toward the non-rotor mount side (right side).
Now for this R470db—
while it's for disc brakes and has no braking surface,
unlike the RR411db, it's not an offset rim.
So I aligned both front and rear wheels
with "no sticker directly below the valve hole when viewed from the right side."
Built a rear wheel using a DT R470db rim.
This is a continuation from the other day.
The hub is a Novatech D792SB with reverse high-low flanges,
24-hole black Champion/Competé 26JIS laced with silver aluminum nipples.
I'll do the final truing later.
I wanted to increase the spoke weight ratio on the freewheel side a bit,
and I also considered Sapim Strong spokes,
but the list price for 100 silver Strong spokes is ¥7,500 before tax,
while black Strong is ¥13,500 before tax.
Since black CX-RAY is ¥50,000, it's cheaper by comparison,
but this time I ended up going with 14-gauge plain spokes.
Black Champion comes in 255–303mm lengths in 1mm increments
and is sold in 4 or 10-spoke units,
but plain spokes can be cut to any length, so they're also sold
in 315mm lengths
in quantities of 72, 100, or 500 spokes.
At our shop, we basically only stock 315mm spokes.
The per-spoke list prices (before tax) for 4/10/72/100/500 units are
¥110/¥89/¥98.6/¥93/¥68 respectively.
Wait, that's weird—the next cheapest unit price after 500 is 10 spokes?
Plus, 4 and 10-spoke sets come with brass nipples (though we almost never use those),
but 72-spoke sets and up are spokes only.
There's a takoyaki shop nearby that sells 6-piece, 10-piece, and 15-piece boxes,
and for some reason the 10-piece is the cheapest per unit.
It's like that here too.
(Though it's rare, if a customer bought 30 pieces, they'd get three 10-piece boxes
versus two 15-piece boxes, and the three 10-piece boxes would actually be cheaper—
I wonder how shop owners don't realize this).
By the way, with silver Champion there's no 72-spoke option,
only 4/10/100/500 spokes,
and their per-spoke list prices (before tax) are
¥68/¥68/¥60/¥40 respectively.
For small quantities the price per spoke stays the same,
and only the 500-spoke option suddenly drops in price.
As I've mentioned before,
on DT rims, the phase of the sticker relative to the valve hole
is offset by 90° between the left and right sides of the rim.
When building an offset rim rear wheel,
the phase directly below the valve hole will always have no sticker
(the upper state in the two images above).
So if the rear rim is the R411 Asymmetric offset rim with braking surface,
and the matching rim brake front wheel is built with the non-offset RR411,
I align the front rim so there's no sticker directly below the right-side valve hole
to match front and rear.
Also, since building an offset rim rear wheel always results in
no sticker directly below the right-side (freewheel side) valve hole,
I interpret this as DT's official standard,
so when building front and rear wheels with non-offset rims like the XR331,
I align both wheels so there's no sticker directly below the valve hole
when viewed from the right side.
In the case of RR411db (image above), disc brake wheels have
a rotor mounting surface on the front hub too,
so both front and rear rims can be offset rims with no problem,
which is why they only come as offset rims.
When building a front wheel with a disc hub, the orientation of the offset rim is
opposite to the rear wheel, so when building front and rear with RR411db,
the phase relationship between the valve hole and sticker when viewed from the right side is always reversed.
Both wheels in the image above are oriented toward the non-rotor mount side (right side).
Now for this R470db—
while it's for disc brakes and has no braking surface,
unlike the RR411db, it's not an offset rim.
So I aligned both front and rear wheels
with "no sticker directly below the valve hole when viewed from the right side."